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What was the problem before people had light-bulbs?

Updated: 8/18/2019
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13y ago

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People used gas and candles before the light bulb was invented. The problem with that is that gas was very strong, poisonous, and effective. Also they're were many fires because of the candles people have been using.

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13y ago
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Q: What was the problem before people had light-bulbs?
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